Frameworks

React

A JavaScript library for building user interfaces with reusable components. Created by Meta, powers Facebook, Instagram, and thousands of apps.

What is React?

React is a JavaScript library for building user interfaces with reusable components.

Instead of writing one giant app, you break your UI into small pieces (components) that manage their own state and can be reused anywhere. React handles updating the DOM efficiently when your data changes.

Most modern web apps use React because it makes complex UIs manageable. You can start with Create React App or jump straight to Next.js for a full framework. The ecosystem is massive with solutions for routing, state management, and pretty much anything you need.

Free and open source. Over 220,000 stars on GitHub. Learning curve is real but worth it if you're building anything beyond a landing page.

Good to Know

Component-based architecture lets you build UIs from reusable pieces
Virtual DOM makes updates fast by only changing what actually changed
Created and maintained by Meta (Facebook), used in production by thousands of companies
Works with frameworks like Next.js, Remix, and Gatsby for full-stack apps
Hooks let you use state and other features without writing class components

How Vibe Coders Use React

1
Building a dashboard where different sections update independently
2
Creating a design system with buttons, forms, and cards you use across your entire app
3
Prototyping a new feature quickly by combining existing components
4
Building a mobile app with React Native using the same component logic

Frequently Asked Questions

Related Terms

Server Components

React components that run exclusively on the server, rendering HTML before it reaches the browser.

Web App

A web app is software that runs in your browser instead of being installed on your device, accessible from any computer with internet.

App Router

Next.js's file-system based routing that uses React Server Components for faster, more flexible page navigation and data fetching.

Tailwind CSS

A utility-first CSS framework that lets you style websites by adding pre-built classes directly to your HTML instead of writing custom CSS.

Lottie

A JSON-based animation format that lets you ship lightweight, scalable animations on any platform without pixelation or huge file sizes.

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